2590861 has 16 divisors (see below), whose sum is σ = 3241728. Its totient is φ = 2016000.

The previous prime is 2590837. The next prime is 2590871. The reversal of 2590861 is 1680952.

It is not a de Polignac number, because 2590861 - 2⁵ = 2590829 is a prime.

2590861 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2590811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6261 + ... + 6661.

It is an arithmetic number, because the mean of its divisors is an integer number (202608).

2^2590861 is an apocalyptic number.

It is an amenable number.

2590861 is a deficient number, since it is larger than the sum of its proper divisors (650867).

2590861 is a wasteful number, since it uses less digits than its factorization.

2590861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 2590861 is about 1609.6151713997. The cubic root of 2590861 is about 137.3455853325.

Subtracting from 2590861 its reverse (1680952), we obtain a palindrome (909909).

The spelling of 2590861 in words is "two million, five hundred ninety thousand, eight hundred sixty-one".